Little Big Town canceled the bike riding part of a fundraiser Sunday (June 10) for the T.J. Martell Foundation, which battles cancer and other life-threatening diseases.

But LBT, Lauren Alaina and several others hit the stage at a Harley-Davidson dealership outside Nashville to entertain the hundreds who showed for the concert part of the annual fundraiser.

And the charity organizers said they expected few riders to ask for refunds, so the event is expected to raise more than $40,000.

"The research they do," LBT's Jimi Westbrook said, shaking his head when the T.J. Martell Foundation is mentioned.

"And they share the research," he tells CountryWeekly.com. "You hear so many good stories about how many tangible things that are happening because of that. It inspires you when you hear that, so we do everything we can."

Lauren Alaina says that for her the cause is personal because her cousin Holly battled a brain tumor.

"if it weren’t for the people out there raising money for sick people, Holly probably wouldn’t be alive right now," Lauren told CountryWeekly.com. "Holly was taken care of so well, and when it personally affects someone in your family, it changes your whole life."